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TPS40052PWP Datasheet(PDF) 3 Page - Texas Instruments |
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TPS40052PWP Datasheet(HTML) 3 Page - Texas Instruments |
3 / 30 page TPS40052 SLUS563B − AUGUST 2003 − REVISED APRIL 2004 3 www.ti.com ELECTRICAL CHARACTERISTICS TA = −40°C to 85°C, VIN = 12 Vdc, RT = 90.9 kΩ, fSW = 500 kHz, VEA_REF = 1.25 V, all parameters at zero power dissipation (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT INPUT SUPPLY VIN Input voltage range, VIN 10 40 V OPERATING CURRENT IDD Quiescent current Output drivers not switching, VFB = 1.3 V 1.5 3.0 mA BP5 VBP5 Ouput voltage ILOAD = 1 mA 4.5 5.0 5.5 V OSCILLATOR/RAMP GENERATOR fOSC Accuracy 9 V ≤ VIN ≤ 40 V 450 500 550 kHz VRAMP PWM ramp voltage(1) VPEAK−VVAL 2.0 V VIH High-level input voltage, SYNC 2 5 V VIL Low-level input voltage, SYNC 0.8 V ISYNC Input current, SYNC 5 10 µA Pulse width, SYNC 50 ns VRT RT voltage 2.38 2.50 2.58 V Maximum duty cycle VFB = 0 V, fSW ≤ 500 kHz 80% 94% Maximum duty cycle VFB = 0 V, 500 kHz ≤ fSW ≤ 1 MHz 75% Minumum duty cycle VFB ≥ 1.3 V 0% SOFT START ISS Soft-start source current 1.75 2.35 3.05 µA VSS Soft-start clamp voltage 3.7 V tDSCH Discharge time CSS = 220 pF 1.6 2.2 2.8 s tSS Soft-start time CSS = 220 pF, 0 V ≤ VSS ≤ 1.6 V 100 155 195 µs BP10 VBP10 Ouput voltage 9.0 9.6 10.3 V ERROR AMPLIFIER VEA_REF Error amplifier reference input voltage(2) 9 V ≤ VIN ≤ 40 V 0.5 0.7 1.5 V Input offset voltage 0.5 V ≤ VFB ≤ 1.5 V −5 5 mV GBW Gain bandwidth 3 5 MHz AVOL Open loop gain 60 80 dB IOH High-level output source current 2.0 4.0 mA IOL Low-level output sink current 2.5 4.0 mA VOH High-level output voltage ISOURCE = 500 µA 3.2 3.5 V VOL Low-level output voltage ISINK = 500 µA 0.20 0.35 V IBIAS Input bias current VFB = 0.7 V 100 200 nA (1) Ensured by design. Not production tested. (2) Common mode range extends to ground, but not tested below 500 mV. |
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